<html>
    <head>
            <meta charset="utf8">

    </head>
    <body>
        <form action="/login" method="post">

            <input type="text" name="username"><br/>
            <input type="password" name="password"><br/>
            <input type="submit" value="提交" name="submit"><br/>

        </form>

    </body>

</html>